{"nhtsa_id":10112621,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2012-11-30","document_id":"PIC3557","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"This Preliminary Information communication provides information to the technician with diagnostics for a class 2 communications Diagnostic Trouble Code U1000 may not lead a technician to a final repair. Technician should be advised to disregard the Diagnostic Trouble Code U1000 that may be set current or in history.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10112621-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10112621-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10112621","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["U1000"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"MALIBU","year_from":2003,"year_to":2005,"match":"exact","vehicle_ids":["2003_chevrolet_malibu","2004_chevrolet_malibu","2005_chevrolet_malibu"]},{"make":"OLDSMOBILE","model":"ALERO","year_from":2003,"year_to":2004,"match":"exact","vehicle_ids":["2003_oldsmobile_alero","2004_oldsmobile_alero"]},{"make":"PONTIAC","model":"GRAND AM","year_from":2003,"year_to":2004,"match":"exact","vehicle_ids":["2003_pontiac_grand-am","2004_pontiac_grand-am"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}